Vacuum bag-sealing machine

Abstract

The present invention discloses a vacuum bag sealing machine used for vacuumizing and sealing plastic bag containing food or the like therein so as to keep the food or the like fresh. The vacuum bag sealing machine comprises a main body consisted of a top cover and a base connected pivotally with the top cover; a static sealing unit including an upper and a lower sealing strip which are disposed on the front portion of the main body, the lower sealing strip being provided with a predetermined number of through holes; a vacuum generating unit including a vacuum pump and an exhaust tubule mounted on the base, the vacuum pump being communicated with the predetermined number of through holes formed in the lower sealing strip through the exhaust tubule; and a heating and opening-sealing unit. The vacuum bag sealing machine is improved in the static sealing unit and the vacuum generating unit, so that it has an increased sealing reliability and a quickened vacuumizing speed.

What is claimed is:  
     
       1. A vacuum bag sealing machine, comprising: 
       a main body consisted of a top cover and a base, said top cover and said base being connected with each other via a pivotal shaft;  
       a static sealing unit, including an upper sealing strip and a lower sealing strip which are disposed on the front portion or said main body, said lower seating strip being provided with a predetermined number of through holes;  
       a vacuum generating unit, including a vacuum pump and an exhaust tubule mounted on the base, said vacuum pump being communicated with said predetermined number of though holes formed in the lower sealing strip through said exhaust tubule; and  
       a heating and opening sealing unit,  
       wherein said static sealing unit comprises an upper sealing strip and a lower sealing strip; said vacuum generating unit comprises an air guide support positioned between said upper sealing strip and said lower sealing strip, the air guide support has an exhaust hole extended by being perpendicular to the top surface and the bottom surface thereof; said exhaust tubule connected with the vacuum pump is communicated with the exhaust hole via said through hole formed in said lower sealing strip; and,  
       wherein said air guide support is a flattened barrel in shape and connected to a mounting rack on said base via a hinge, and can rotate around the hinge; said exhaust hole is formed in the central portion of said air guide support, and said exhaust tubule is mounted on said base under said exhaust hole.  
     
     
       2. The vacuum bag sealing machine of  claim 1 , wherein the upper end face of said exhaust tubule is higher than the surface of said base therearound. 
     
     
       3. The vacuum bag sealing machine of  claim 1 , wherein said upper sealing strip of said static sealing unit is fixed in said top cover, a first recess is provided in a bottom portion of said upper sealing strip, the profile of the first recess is adaptive to that of the upper portion of said air guide support; a second recess is provided in a top portion of said lower sealing strip, the profile of the second recess is adaptive to that of the lower portion of said air guide support; said through hole is formed in the second recess of said lower sealing strip at a position corresponding to said exhaust hole, and communicated with said exhaust tubule on the base. 
     
     
       4. The vacuum bag sealing machine of  claim 1 , wherein said exhaust tubule and a pressure switch are connected with an inlet end of said vacuum pump via a rubber hose. 
     
     
       5. The vacuum bag sealing machine of  claim 1 , wherein said heating and opening-sealing unit comprises heating wires disposed on said base outside said lower sealing strip.